How can you tell if a circuit is open or closed?
How can you tell if a circuit is open or closed?
If there’s a break anywhere in the path, you have an open circuit, and the current stops flowing — and the metal atoms in the wire quickly settle down to a peaceful, electrically neutral existence. A closed circuit allows current to flow, but an open circuit leaves electrons stranded.
Where is the crankshaft position sensor located on a Duramax Diesel?
Crankshaft Position Sensor (CKP) The crankshaft position sensor is located on the lower passenger side of the front engine cover. It is a three wire Hall-effect sensor that provides a digital signal. This sensor reads a 57-tooth reluctor wheel located on the nose of the crankshaft behind the front engine cover.
Where is the fuel junction block on a Duramax?
On the original LB7 Duramax it is located in the fuel junction block. On the LLY Duramax, it is located in the middle of the right-hand fuel rail.
When was the first Duramax diesel fuel injection system introduced?
A whole new approach to diesel fuel injection was introduced by the first Duramax in 2001 (Ford had introduced electronic common rail diesel fuel injection before that, however the system required engine oil pressure to actuate the injectors.
What does it mean to have an open circuit?
An open circuit implies that the two terminals are points are externally disconnected, which is equivalent to a resistance R =∞ . This means that zero current can flow between the two terminals, regardless of any voltage difference.
How much does a Duramax injector circuit cost?
The wiring on the injectors is very simple: One wire powers the injector while the FICM fires the injector by grounding the other. The recommended resale from my supplier on these remanufactured injectors is about $1,600 for the set of four.
What happens when I put my Duramax in limp mode?
While in limp mode, the transmission will lock in 3rd gear, the torque converter will remain unlocked, and the transmission will not be able to operate in reverse. It’s great to have such a fail safe, but in many instances the limp mode is activated when it’s not entirely necessary.
Is it easy to do pinpoint diagnostics on a Duramax?
Sure, it’s easy to talk about pinpoint diagnostics, but with the fourth pin-out on the FICM C1 and C2 connectors yielding the same results, I really didn’t have any place to go with the diagnostics except to replace the FICM as recommended by service information.
What is the code on the Duramax fuel injector?
Low and behold, the P1249 had returned as it had numerous times before. But the only code displayed was a P0205, which indicated a circuit fault on #5 fuel injector. Working quickly before the cylinder heads warmed up, we removed the FICM connectors and repeated the pin test.
